Herman j



(No Model.) vEL Jl GERBSCH- PUMP.

' No. 431,575. Patented-July 8, 1890.

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UNITED STATES PATENT OFFICE.

HERMAN J. GERBSCH, or wAUsAU, WISCONSIN.

PUMP.

SPECIFICATION forming part of Letters Patent No. 431,575, dated July 8, 1890.

Application filed February 9, 1888.

To a/ZZ whom, it may concern:

Be it known that I, HERMAN J. GERBSCH, of Vausau, in the county of Marathon, and in the State of IVisconsiinhave invented certain new and useful Improvements in Pumps; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to pumps, and will be fully described hereinafter.

In the drawings, Figure l is a side elevation of my improved pump. Fig. 2 is a vertical section of the lower portion of the same. Fig. 3 is a bottom View of the cylinder, and Figs. 4, 5, and 6 are modified details.

A is the pump-cylinder.

B is a pipe that is coupled Yto the cylinder at a and supports the pumpinglever b.

C is the outlet-pipe that terminates at its upper end. in a spout D.

The pump-rod is made in two sections G H, which are secured together by a coupling f, which is screwed onto the upper portion of section H, and in which the lower end of section Gis fitted and held by a set-screw. A valve-chamberl is screwed onto the lower end of the section H of the pump-rod, and the bottom of a tube g rests upon the top of the valve-chamber, and a nut h on the upperend of the section H confines the tube in place. This tube forms a piston, which is packed by a rubber or other suitable packing-ringj, that is held in place by a ring m, that is screwed or bolted to the top of the cylinder, and another rin g n, that is screwed onto ring m. The valve-seat L is screwed into the bottom of valve-chamber I, an d loosely confines the valve i in the chamber, while the sucker-washer U is confined between the lower rim of the valvechamberand the flange p of the seat L. The cylinder-valve is of the usual flexible style, consisting of an annulus M and flap N. The annulus is confined in place between the upper end of the lower coupling-ferrule R and the lower end of the cylinder by a coupling S, the flange f of which underhangs the flange of the ferrule, while its vertical portion is screwed onto the cylinder, as in Fig. 2. This of course necessitates the taking apart of thecylinder. rlherefore to obviate this I may form the cylinder with internal screw-threads Lu at its bottom to receive an externally screwthreaded ring X, by which the annulus of the valve is held down in place, as shown in Serial No. 263,508. (No model.)

Fig. 4. This ring X is slotted at X X', as best shown in Fig. 5, to receive an instrument, by which it may be turned to screw it up or down.

It will be seen that while every part of my improved pump is secure, they are all easily accessible and capable of easy removal and replacement.

In Fig. 6 I show the ring m with a lower horizontal flange secured to the top of the cylinder A by bolts Z Z, which pass through said flange and through a like outwardlyturned horizontal flange extending from said cylinder, there being preferably a suitable packing-rin g Y interposed between the opposing faces of the two flanges.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In apump, the combination, with the pumpcylinder, of a pump-rod, made in two sections united by a-coupling, a valve-chamber screwed directly to the lower end of the lower pumprod section and having internal screw-threads, a valve-seat having external screw-threads engagingv with the internal screw-threads of the valve-chamber, 'and a bottom annular flange, a horizontal sucker-washer confined,f between the' lower rim of thel valve-chamber and the said annular flange of the valve-seat, a valve loosely confined in said valve-chamber, a tube surrounding the lower section of the pump-rod, and resting on the top of the valve-chamber, a nut on the upper end of the lower section of the pump-rod for confining the tube in place, a ring secured to the top of the pump-cylinder and having exterior screwthreads, a packin g-rin g surrounding said tube and resting on said pump-cylinder ring, a'

clamping-ring surrounding said tube and packingring, and having interior screwthreads engaging with the threads of the pump-cylinder ring, and a flap-Valve at the bottom of the pump-cylinder, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of Wiscousin, in the presence of two witnesses.

HERMAN J. GERBSCH.

Witnesses:

S. S. STOUT, N. E. OLIPHANT.

IOO 

